RE: [WEB400] New System Development Tomcat Tuning

["Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>]

> From: David Morris
>
> What version of Tomcat? I use 4.0.3. We have significantly more
> than 20 users and never see the kind of response that you are
> experiencing. I built my own startup scripts that give Tomcat
> the memory it needs to run -- what values did you use? Do you
> use native access? I am running Tomcat standalone, which is
> supposed to run slower than IBM's installation but I wouldn't bet
> on it (what do they have to gain by optimizing Tomcat?).

I'm using the version of Tomcat that is shipped with the AS/400.  Remember
that in my tests every user is hitting the enter key every 500ms, which is a
far higher load than a real application ever sees.  Have you tried using a
stress testing package?  I use WebRoller and it works quite well, and it
gets rid of any subjective measurements.

Again, as to settings, I'm using the default settings for both WebSphere and
Tomcat.  I don't claim to be an expert at tuning, but I also don't want to
become an expert at tuning.  Same reason I prefer DB2 over Oracle.  An
Oracle DBA can tune Oracle to perform extremely well, but that means I need
an Oracle DBA.  Perhaps I can tune Tomcat, but that means I have to learn
how to tune Tomcat.  Don't wanna.


> How hard would it be for me to duplicate your test on my system?

Pretty much impossible.  It's my product development environment.